Hi,

About reponsive, I'm clear about the issue. Please send me your screenshot the issue and tell me about the issue.

About  AMP, please go to https://themeforest.net, login to your themeforest account and go to download page > re-download "All files and documentation" > after downloaded this package, extract it and open the folder, use penci-pennews-amp.zip file for your install.

then go to admin page > Plugins > All Plugins > deactivate & delete pluginand re-install & active Penci PenNews AMP - WordPress Complete AMP plugin.

Best Regards,

PenciDesign